"Dr. Kaufman: Less than a month ago, Santa Mira was like any other town. People with nothing but problems. Then, out of the sky came a solution. Seeds drifting through space for years took root in a farmer's field. From the seeds came pods which had the power to reproduce themselves in the exact likeness of any form of life.
Miles: So that's how it began...out of the sky.
Dr. Kaufman: Your new bodies are growing in there. They're taking you over cell for cell, atom for atom. There is no pain. Suddenly, while you're asleep, they'll absorb your minds, your memories and you're reborn into an untroubled world.
Miles: Where everyone's the same?
Dr. Kaufman: Exactly.
Miles: What a world. We're not the last humans left. They'll destroy you!
Dr. Kaufman: Tomorrow you won't want them to. Tomorrow you'll be one of us.
Miles: I love Becky. Will I still feel the same tomorrow?
Dr. Kaufman:There's no need for love.
Miles: No emotion? Then you have no feelings, only the instinct to survive. You can't love or be loved! Am I right?
Dr. Kaufman: You say it as if it were terrible. Believe me, it isn't. You've been in love before. It didn't last. It never does. Love. Desire. Ambition. Faith. Without them, life is so simple, believe me.
Miles: I don't want any part of it.
Dr. Kaufman: You're forgetting something, Miles.
Miles: What's that?
Dr. Kaufman: You have no choice.

Invasion of the Body Snatchers 1956